different role of core drill bits

First, tell us about this twist , because there are too many types of drills to say , how to understand the difference with other drill twist it ? It is understood that twist the words of the working GUSHI concrete polishing pads  portion has two spiral grooves , the shape of cannabis, hence the name. Secondly , taper shank twist on extended structure, there is the use of what are the advantages? 1 Typically the diameter range of 0.25 to 80 mm . It is mainly composed of a working portion and a shank portion . 2 In order to reduce the guide portion and the hole drilling intramural friction , twist from the direction of the drill tip to gradually reduce the diameter of the shank inverted cone . 3 major influence extended helix angle taper shank twist angle  GUSHI metal grinding wheel of the cutting edge approached the size , strength and chip performance edge flap , typically 25 ° ~ 32 °. 4 spiral groove available milling, grinding , hot-rolled or hot extrusion processing methods such as forming part of the cutting tip drill by grinding . 5 vertex standard twist drill cutting part 118 , chisel edge angle is 40 ° ~ 60 °, the angle of 8 ° ~ 20 °. For structural reasons , the rake angle at the outer edge of the large decreases toward the  GUSHI diamond polishing tools middle , chisel at a negative rake angle ( up to about -55 °), from the squeezing action when drilling . 6 In order to improve the taper shank twist drill cutting lengthened , according to the nature of the processed material will be ground into a variety of cutting part of the revised shape . Not to mention longer taper shank twist drill with efficient appreciation of space, but it is worth it value into the ......

diamond blade saws easily collapse or broken tooth problems

Questions about the high-speed hacksaw teeth or broken easily collapse
When using high-speed hacksaw to cut various types of pipes, there are many situations because it is not caused by the attention to detail.
(1) Material: Sometimes the problem is with the material being cut. Some suppliers of production materials market, the GUSHI cutting discs  process of cutting corners, causing the material to be cut contains too many impurities, so that when the blade hit the impurity particles, hard blade may break or give great sound, cut out of the surface uneven. But with softer high-speed hacksaw will not break, but the results will be skewed cutting phenomenon, because there will be a shift phenomenon blade in contact with the particles. The hardness of the material itself or some may not be too high, but the elements are added during the production process used and the cutting tool may cause problems or result in blunt edge chipping.
(2) Blade: Blade not properly gracefully compressive deformation, serrated blunt did not wear out, yaw poor, poor choice of teeth, serrated grinding bad. In short, poor quality blade.
(3) cutting machine: the state of the fixture, the blade is not installed correctly, the blade speed is not correct, not suitable feed rate, cutting oil selection, and the saw blade and cutting machine errors will be affected by each other. Skew the results of a customer complained that cutting through our observations to the scene, feeding racks are not fixed, when workers transport materials, often crooked off accidentally collide. Work Material crooked off after feeding rack, of course cut out of the material must be crooked. Customers also complained frequently broken saw blade can not  GUSHI sds hammer drill bits be solved, we got to the scene found the mechanical design of the book has been pointed out, the longer the cutting material, there must be a fixed station to make the cut section was not shaking. However, when the customer is still chopped materials and the same, so the blade will have to be cut by shaking timber crashed. Customers also have the machines installed at the time and did not make the level of correction, so the machine is fundamentally crooked.
(4) the use of counterfeit machine: using poor quality metal circular sawing machine, the price was very cheap but in the production process of steel is not enough to cause the cutting vibration, so that there is a gap down the blade, cutting blade will have shaken will ultimately affect the properties of the cutting blade.
(5) manual machine operator: When using a manual machine, the user experience is more important, the user can feel the sharpness of the blade into the blade when the intensity and relatively easy to determine whether you can then use the saw blade ! The pneumatic or hydraulic models require the  GUSHI diamond polishing tools user to more cautious use of the saw blade, cutting the workpiece which can not be blind to experience cutting grounds. Because each piece of the blade when cutting a workpiece not be the same, so that also in the life of a generally sawtooth a range. At the beginning of the cutting and stopping cutting, do not feed too fast, it may cause broken teeth and damaged. When the case has emerged relatively blunt serrated continued use will be pulling teeth, broken teeth and so on, there will be a serious crack blade body, the phenomenon of explosive film!

Application and the status of Diamond tools

 As the world economic development, improving people's living standards, natural stone (granite, marble), jade, advanced artificial stone (ceramic stone), ceramic, glass, and cement products, has been widely used in homes, buildings decoration objects, used in the production of a variety of decorations, household items and applications in road, bridge construction. On the processing of these materials, we need a variety of diamond tools.
   Last 10 next year, Chinese production  GUSHI concrete diamond blades of diamond tools business has developed rapidly. Judging from the number of enterprises, production of diamond tools business nearly a thousand, annual sales income of more than ten billion. Jiang Zhongguo production of diamond tools business as much as a large scale, is any other country in the world can not be compared, will become the world's diamond tools supply base. Some varieties of Chinese diamond tools also has a high level of quality, a number of brand-name foreign diamond tools also commissioned the production of Chinese enterprises. However, most of the production of most of the products are of substandard quality, low price products. Although many number of Chinese exports diamond tools, most of them low-priced products, known as 'junk'. Even high-quality products, which meet or exceed the quality of similar foreign products, because it is made in China, but also can not afford to sell at good prices, seriously affect China's image. What is the reason for this situation is? To sum up two main reasons. First, the low level of technology. Development of diamond tools production technology has been divided into three stages. The first stage is used for elemental powders by mechanical mixing matrix plus diamond diamond tool production process. This process is prone to segregation of components; sintering temperature is high, likely to cause graphitization of the diamond, the diamond of lower intensity. Due to a combination of various matrix materials are mechanical, not fully alloyed diamond matrix package inserts for poor, difficult to produce high-end products. The second stage is the use  GUSHI cutting discs of pre-alloy powder for mixing matrix plus diamond diamond tool production process. This process is due to be fully alloyed matrix material, the sintering temperature is low, the diamond will not reduce the strength of the ingredients to avoid segregation of the diamond package inserts produce good results, the diamond features play very well. For carcass production with pre-alloy powder diamond tools, high-efficient, slow decay characteristics that can produce high quality diamond tools. The third stage is the use of pre-alloy powder as matrix, using diamond ordered (multi-layer, uniform diamond) technology. This technology is the technical advantage to accommodate pre-alloy powder, in turn ordered diamond, the diamond had to make full use of each piece, mechanical mixing process overcomes the uneven distribution of the diamond to bring serious defects affecting the cutting performance , is the world's production of diamond tools, the latest technology. In commonly used? 350mm diamond cutting discs, for example, the cutting efficiency of the first stage of the technical 2.0m (100%), the second stage of the technical cutting efficiency is 3.6m (up to 180%), the third phase cutting efficiency technologies 5.5m (up to 275%) or more. The first phase of the technology in China currently produces diamond tools in the enterprise, 90% still use less than 10% of companies use the second phase of the technology, the use of individual third stage technology companies. Is not difficult to see that the current Chinese enterprises in the production of diamond tools, a few companies are fully capable of producing quality products. However, the vast majority of companies still use the traditional, outdated technology.
Second, vicious competition. Diamond tools are consumables market demand. According to the current technology of the GUSHI dry core drill bits  first stage production of diamond tools, diamond tools on new business easier. In not too long a time, the Chinese production of diamond tools business reached nearly a thousand. ? To commonly used 105mm diamond saw, for example, the product level is the 'quality' of prices above $ 18, about 10%; product grade is 'standard', the ex-factory price of about 12 yuan, accounting for 50% ; product grade 'economy', the ex-factory price of around 8 yuan, accounting for about 40%. These three products is calculated according to the average social cost, 'high-quality' margin products can reach more than 30% profit margin 'standard' products can reach 5 to 10%, 'economy' products can only be guaranteed as well, most Enterprise prices are below $ 8, and even as low as 4 yuan.

Characteristics of diamond tools and applications

1, using a diamond low coefficient of friction, and non-ferrous metal

affinity characteristics of small diamond-hard metal cutting tools, saw

blades can be processed copper, aluminum, iron, etc., but do not stick

a knife, diamond tools and cutting tools can  GUSHI diamond hole saw effectively prevent the

occurrence of metal bonding .
2, used for processing high hardness nonmetallic materials, such as

glass fiber reinforced plastic, filled silicone materials and other new

materials.
3, diamond tools, saw blades easy passivation, cutting small

deformation, high surface quality can be obtained.
Diamond tools for our manufacturing industry with a lot of efficiency

and convenience, then I do not know the performance characteristics of

the diamond tool know how much?
Diamond tool is mainly used for grinding and abrasive, diamond pen made

for some wheel dressing, only a small diamond welding or mechanical

clamping method of fixing the shank, ground into the desired angle as

the cutting tool.
Diamond tools have high hardness and wear resistance. Its hardness of

cemented carbide hardness higher  GUSHI concrete diamond blades than several times, so it has good

machinability and tool life. In the processing of plastics, diamond

tools durability hundreds of times higher than the carbide.
Diamond tools have high wear resistance (natural diamond 80-120 times

the wear resistance of carbide, synthetic diamond is 60-80 times), plus

fly: to achieve an accuracy guarantee. Processing material hardness is

higher, this superiority is also more prominent. PKD tool high

processing costs, its rough prices are expensive compared to using the

tool cutting PKD consuming and laborious, and the rejection rate is

quite high. Apart from the geometry GUSHI masonry drill bits  and dimensions of a manufacturing

error, but due to the brittle material PKD high, prone to chipping on

the cutting edge gap, which is difficult to describe the precision tool

manufacturers for production and processing of PKD tool when done. PKD

tool in the development process, and now there may be more economical,

more quality PKD tool to ensure that such production and processing,

the spark is a good method of processing PKD cutting tool.

Alloy circular saw blades that content quality inspection

Core Tip:. ① substrate surface finish inspection, application plug blade hole detection, or the naked eye holes over the surface of the knife if there is full contact with the blade edge ruler detect flatness or wavy and pot-shaped, with the end
①. Matrix test surface finish, blade hole  GUSHI colde saw blade plug detection application, or the naked eye hole cutter with completely over the contact surface with the knife blade flatness ruler detection or wavy and pot-shaped, with a client-side jump jump cytometry tooth holder has an oxide or glitches with durometer hardness uniformity detection surface rust and other indicators.
②. Weld inspection wire fluidity, weld strength, welding burns oxide should not be beyond the undercut, solder alloy tooth deflection degrees, depending on the angle between the bottom and the minimum width of the alloy matrix should not be less than 1.2mm, it has cracks, oppose any Alloy Welding pressure detection firmness.
③. Grinding teeth grinding detection plane A, B two tables side by checking with moderate (by surface contact pin) suitable level contacts, detect lateral angle, side front corner by applicable Point
Touch table shows how much depends on the thickness of the alloy with a dial gauge to check, only check the tooth GUSHI tile cutting blades  thickness, but the majority of the blade itself or wavy pot type parameter must have a bad end is always the best way to jump meter is the most accurate test, Also check the tooth surface finish, such as wheel apparent traces of some poor durability of the knife can not see the two flanks, accurate detection angle was still true after grinding. After checking the angle, in radians or allowed to produce clear signs of the wheel or the back rake angle, when the two sides of trails around the tooth jump in line, do not allow left or right high right low left high low, generally detected with a diameter hop, visual inspection main cutting edge in front of the human body is not allowed to  GUSHI carbide saw blades see any white lines, when Lee Tudor feel with obvious edge detected with visual clarity. Blade rake angle or rake smooth wheel Keys, no two blades, domestic mill still hand front corner motive or mechanical automata, often grinding rake angle wheel or front edge retraction pressure, causing the blade to produce an obtuse main cause The main reason the tool is not durable, Germany retract hydraulic lift with grinding function, so the product is very duo Lee grinding.

The main mechanism of grinding wheel burns introduction

When the grinding wheel surface temperature , if the cooling measures is not good , it's easy on the workpiece surface ( from tens to hundreds of um um) occur secondary quenching and tempering . If the grinding wheel surface layer of the instant temperature exceeds steels AC1 point, the role of the secondary coolant quenched martensite , while  concrete saw blades in the subsurface due to temperature gradients , short time , only the formation of high-temperature tempering organization This makes the surface and subsurface between the tensile stress and the surface of a thin brittle secondary hardening martensitic , when can not afford , it will crack.
Heat treatment of
A ) residual austenite retained austenite grinding wheel grinding wheel grinding wheel because heat and pressure generated changes occur at the same time may be accompanied by tempering and grinding wheel surface cracks. Amount of residual austenite should be controlled within 30% .
2 ) carbon concentration diffusion layer nitrided layer carbon concentration is too high, easy to form a nitrided layer tissue or excessive free mesh carbide carbide . Because this substance extremely hard , the wheel grinding process may lead to local overheating tendencies and incidence surface tempering . Nitrided layer carbon concentration is too high, the surface will produce excessive residual austenite. Resulting in burns and cracks. Therefore, the surface carbon concentration increases, reducing the performance of the grinding wheel , the general surface carbon concentration should be controlled within the range of 0.75% -0.95 % .
3 ) carbide distribution should be diamond core drills  uniform carbide distribution and morphology , particle size not greater than the average diameter lμm; carbide morphology should be spherical , powdered or finely punctate distribution along the net , mesh or angular carbides are not allowed .
4 ) decarburization heat treatment . Surface or environmental cause improper surface oxidation , so that the workpiece will produce a thin carbon layer , this layer will cause decarburization soft wheel overload or overheating , resulting in surface tempering .
5 ) tempering the premise of ensuring the hardness , the tempering temperature is as high as possible a number , as long as some of the annealing time . This can improve the surface carburized hardened plastic , and the residual stresses are balanced or lower . Improving the abrasive tools  distribution of surface stress . This can reduce the probability of cracks occur workpiece , thereby improving the efficiency of the grinding wheel grinds the workpiece .
6 ) deformation should minimize heat deformation . This reduces the grinding wheel margin. If the heat deformation is too large, if the operation is not in the workpiece grinding wheel radial runout maximum at the beginning of the grinding wheel , grinding wheel each time point at which the grinding wheel is removed margin would not be normal, resulting in burns and cracks.

Some of the advantages of diamond tools

Diamond tools are widely used in the manufacturing industry, then how about diamond tools trends? Following is a brief introduction, I hope for your help:
A, variety, product  concrete ring saw series: Domestic Diamond Products showing species diversity, product refinement, the application of the trend of specialization. General scale enterprises have dozens of product specifications, a slight scale enterprises have hundreds of product specifications, larger enterprises with thousands of product specifications and the products can be customized according to user requirements.
2, the product according to user requirements are divided into two classes: the use of diamond tools, habits and cost factors, have been artificially divided into two distinct series: First, a larger amount of relatively low price DIY products, such products have a concrete vibrator  greater market; two major international markets for high-end professional products. As in recent years, China's rapid diamond production and quality improvement to be diamond products production technology continues to improve, China's high-end products, diamond tools manufacturing level has made significant progress, and the price advantage is obvious, professional products in the international market competitiveness has enhanced.
3 In recent years, various formulations of pre-alloy powder, adding rare earth metal carcass powder material applications and single (multi) brazing technology, diamond in the carcass ordered, innovation and other new matrix structure

Grinding wheel is the most important one class of abrasive.

 Grinding wheel is the most important one class of abrasive. Added to the abrasive wheel is binding agent, the green compacts, drying and calcining a porous body made. As abrasives, binders and  tuck point blades manufacturing process is different, the wheel characteristics vary greatly, so the grinding machining quality, productivity and economy have a significant impact. Mainly by the grinding wheel abrasive characteristics, the intensity, binders, hardness, structure, shape and size and other factors. Wheel variety.
Can be divided according to the  polishing pads for granite ordinary abrasives abrasives (corundum and silicon carbide, etc.) and natural abrasive grinding wheels and superabrasive (diamond and cubic boron nitride) grinding wheel;
Shape can be divided according to level grinding wheels, bevel wheel, cylindrical grinding wheels, cup wheels, disc wheel, etc.; binding agents can be classified according to the ceramic grinding wheel, resin grinding wheel, rubber wheel, metal grinding wheel. The wheel parameters are abrasive, viscosity, hardness, binders, shape, size and so on.
Since wheel usually work at high wood saw blades  speed, thus turning test should be carried out before use (guaranteed wheel at the maximum operating speed, not break) and static balance test (to prevent machine vibrations caused by the work). Grindstone at work for some time, should be trimmed to restore grinding performance and correct geometry.

abrasive grinding wheel under loads shedding difficulty level.

The cutting tool is a grinding wheel, which consists of many small and hard abrasive particles and adhesive bonding agent made of the porous body. Directly responsible abrasive cutting work concrete blades  must be sharp and has high hardness, heat resistance and a toughness. Commonly used abrasive alumina (also known as corundum) and silicon carbide two kinds. Alumina-based abrasive, high hardness, good toughness, suitable for grinding steel material. Silicon carbide abrasive hardness is higher and more sharp, good thermal conductivity, but more brittle, suitable for grinding cast iron and carbide.
The same abrasive wheel, due to their different thickness, the surface roughness after the workpiece and the machining efficiency is not the same, for the coarse grains coarse, abrasive for grinding small, the more coarse abrasives, the smaller the grain size number.
From the bonded abrasive binders role. Commonly used ceramic binder, followed by resin binding agent. Binding agents are selected  core drill bits from different materials, the impact grinding corrosion resistance, strength, heat resistance and toughness.
Abrasive grains bonded more firmly, the more difficult from the wheel fell off, they said grinding wheel hardness, the hardness of the grinding wheel surface is abrasive grinding wheel under loads shedding difficulty level. Off easily called soft, otherwise known as hard. The  diamond blade hardness and abrasive grinding wheel hardness are two different concepts. Surface of the workpiece to be ground is relatively soft, abrasive edge (corners) for easy to wear, this time can be abrasive to use longer, more solid bond that is optional wheel (high hardness wheel). Conversely, low hardness grinding wheel for high hardness of the workpiece.
Wheel in high-speed conditions of work, in order to ensure safety, should be checked before installation, there should be no cracks and other defects; wheel in order to work smoothly, balancing test should be carried out before use.
Grinding work after a certain time, the surface of the gap may be clogged debris, blunt abrasive acute angle, the original geometry will be distorted. Therefore, the ability to be cut and trimmed in order to restore the correct geometry. Wheel dresser diamond pen required.

potential huge new cutting tool material

With modern science and technology and the development of production, a variety of new materials difficult to machine large number of applications in the product, the traditional carbide tools have  concrete core bits been difficult to meet production needs, while the ceramic tool is its excellent heat resistance, wear , good chemical stability and high cost and by people of all ages. Especially in the field of high-speed cutting and difficult to machine materials, showing the traditional tools can not match advantage.
The use of ceramic cutting tools ordinary steel, cast iron, hardened steel, high manganese steel, nickel-based superalloy, powder  PCD grinding wheel metallurgy sintered parts, glass, steel and a variety of engineering plastics and other difficult to machine materials, tool life and even several times higher than the carbide tools ten times. It can not only in production for general turning, boring and milling, and has been successfully used on the hole processing tool; except in the ordinary use of the machine, but also can be effectively used CNC machine tools and machining centers, high- equipment, is internationally recognized as the most contemporary improve production efficiency as a potential tool. In addition, diamond and cubic boron nitride and other superhard cutting tool compared to the relatively low  concrete ring saw price of ceramic cutting tools (ceramic cutting the main raw material of aluminum oxide, silicon is the most abundant element in the crust, inexhaustible, with inexhaustible), therefore, it was said: "With modern ceramic tool material properties of continuous improvement, in the future it will work with coated carbide cutting tools, diamond and cubic boron nitride and other superhard cutting tool with a high-speed cutting, dry cutting and The three main hard cutting tool. "Figure 1 shows the tool in hard turning using ceramic instead of grinding the carburized hardened gear (57 HRC-59 HRC) synchronization cone part, bore and back The application examples.

diamond abrasive and filler mixed in advance

Diamond grinding wheel used more widely , mainly for grinding or cutting , then you know how to process diamond wheel is made ​​of it ? Here we introduce a simple method for processing diamond wheel :
Prior and diamond abrasive fillers , these fillers can be salts, glass beads or magnetic particles. After sds plus drill bits  bonding , 20% the thickness of the filler particles are bonded by a metal binding agent , these fillers were used in addition to the following methods : dissolution method , sublimation method or magnetic method . This method of diamond abrasive filler particle size and particle size roughly the same amount of filler to make the diamond abrasive work surface to achieve the required concentration . The disadvantage of these methods is complicated in addition to the wet saw blades  filler , require special set of methods .
In addition to the filler is a relatively simple method using the spherical filler particles, the surface is smooth, a metal binding agent is first deposited diamond abrasive grains having a thickness of 20% of the height , and the filler brush with a brush , and finally continue the metal binding agent is deposited to predetermined thickness , use of this method to different metal bonded surface roughness and shape of the particles of different capacities of the gripping effect, the drawback is that  concrete cutting blade the diamond abrasive particle size of the filler particle size rather , after bonding and thus in the same plane, with the mechanical in addition to the packing method , there may give some diamond abrasive brush together , especially those close to equal area like shape of the particles , smooth surface of the particles .

performance of cutting tool materials - metal-ceramic

Cermet (Cermet), also known as titanium-based alloy (also called it as "porcelain gold", "Tao Jin," etc.), it has excellent mechanical properties and high temperature performance, as its name implies it, has both ceramic (Ceramics) materials with high hardness, but dry polishing pads  also has a metal (Metal) material strength and toughness, and the price is relatively cheap. For a long time, cermet cutting tool materials applications as far as widespread as other similar carbide. In recent years, metal ceramic tool materials development and application of gradually be taken seriously, also expanded its scope of application. 2 Performance analysis and comparison of cermet
Cermet sintered material with other commonly used - carbide and ceramic, the main chemical composition, temperature performance, and other mechanical and physical properties.
Cermet have the following performance characteristics.
High hardness and high temperature hardness
Tool flank wear mainly by friction between the tool and the workpiece caused by the relative motion, and the tool is directly related to the hardness and high-temperature hardness. Metal ceramic blade, high hardness, good red hardness, so then flank wear better. High hardness but also improve the wear resistance of the tool rake face an important factor.
High surface free energy of the low
Materials, surface free energy and its enthalpy, surface tension, and so on, is the characterization of surface properties of materials based on indicators, which can characterize the  sds drill bits material surface chemical stability under high temperature conditions, the surface free energy of the negative material, the greater the more stable chemical properties. Surface free energy value is calculated as DG DG = nu ∫ w dE dr
2 l0 dr
Where: E - interatomic potential
l0 - stable union state atomic spacing
nu - material damage cracking unit area required to pull a combination of atoms
r - the distance between atoms
Cutting steel, the tool flank wear in front of the main form of crater wear, the wear rate of the tool material chemical stability under high temperature, molten material into the tool material in the iron solubility of other closely related. As cermet surface free energy, into the molten iron solubility and diffusion reaction between materials is lower than cemented carbide, cermet tool rake face so crater wear resistance than the diamond discs  ability carbide.
The lower surface free energy (DG negative large), better chemical stability, materials and the stronger the antioxidant capacity. Tool wear occurs mainly in the boundary depth of cut at the boundary in contact with air, where the oxidation-shaped groove is formed easily intense wear. Cermet superior antioxidant properties of carbide. Figure 3 shows the NX33 P10 carbide cermet tools and the tool to cut the workpiece under the same processing conditions due to differences in tool boundary wear surface quality differences. The figure shows the boundary cermet tool wear, good surface quality; boundary carbide tool wear and poor surface quality.

corundum ceramic grinding wheel

Vitrified grinding characteristics: grinding power, high speed machining workpiece does not burn, and  granite blade  durability can be corrected speed and efficiency advantages of precision grinding tools for precision grinding of large quantities, the processing of the workpiece hardness. Wheel granularity selection principle: a coarse-grained grinding wheel Suitable for: soft material like soft iron and non-ferrous materials such as feed volume, surface roughness less demanding, grinding big occasions two contact surfaces, fine-grained grinding wheel for : and  granite core bits coarse corundum grinding wheel opposite hardness, lower toughness, suitable for hardened steel, alloy steel, high speed steel and other materials, grinding, can also be used for thread machining gears and thin-walled parts. Supply Grinder with corundum grinding wheel, vitrified grinding wheels, large mill wheel

planes of single crystal diamond tool selection

Diamond crystals are cubic plane, since each crystal form and surface atomic

arrangement atom density difference and the diamond cup grinding wheel  distance between the different

planes, resulting in a natural diamond crystal anisotropy, so the performance

of the diamond crystal surface only of the physical and mechanical different

performance, ease of manufacture and service life which are not the same, the

microstructure of the crystal surface damage strength are also significant

differences. Microscopic diamond crystals Hertz strength test method used to

determine, since the diamond is a typical brittle material, the strength values

​​are generally larger deviation depends on the morphology and distribution of

stress distribution range, so suitable analysis of probability theory. When the

effect of stress is the same, (110) crystal plane maximum probability of

damage, (111), followed by (100) crystal plane of the minimum probability of

breakage. Ie external force, (110) crystal face the most easily damaged, (111)

crystal face, followed by (100) the most difficult to break. Although the (110)

crystal plane grinding is higher than the diamond polishing pads  (100) crystal plane, but the

experimental results show that the (100) crystal face and the other plane has a

higher resistance to stress, corrosion, and thermal degradation capability.

Considering the combination of micro-strength, a (100) plane around the flank

of the tool to make easy tool edge grinding of high quality, easy to produce

microscopic chipping.
Normally be carried out according to requirements of the tool planes of the

single crystal diamond tool selection. In general, if the request to obtain the

highest strength diamond tool, should be used (100) surface as the tool before

the flank; if required resistance to mechanical wear diamond tool, the

selection of (110) crystal face as the tool before and after the diamond blade saws  flank; if

required chemical wear resistant diamond cutting tool, it is desirable use of

(110) crystal plane as the tool rake face, (100) crystal face as the flank, or

the front, flank are used (100) surface. These requirements are necessary to

achieve by means of crystal orientations.

grinding wheel selection principle

1, good uniformity and organization did Hu cracks, out side, hoarse voice quality resin grinding wheel is a basic expression.
2, rotation speed, static unbalance in grams and limit deviations geometry is an important guarantee for the diamond blades  safety of resin grinding wheel.
3, the cutting cutting, grinding workpiece glitch in the  process, only the greatest play Wheel of use features to help you improve efficiency, reduce consumption, reduce production costs. How to maximize the use of wheel play features, only according to the workpiece material selection corresponding wheel.
4, wheel size directly affects the choice to the diamond core drills  workpiece surface finish and grinding efficiency, in general, with the coarse-grained grinding wheel grinding efficiency is high, but after the workpiece surface is rough, with fine-grained grinding wheel, surface finish is better, but the grinding efficiency is low, in short, to meet surface finish requirements of the premise, should try to use coarser grinding wheel in order to ensure a high grinding efficiency.
5, under normal circumstances, cut and polished high hardness of the workpiece should be used in a number of hardness softer wheel, grinding softer workpiece hardness should be selected slightly harder wheel, so to soft g steel to steel, consumer goods Sophie. Grinding wheel and workpiece contact surface or ground pressure should be used in the hardness slightly softer wheel, grinding poor thermal conductivity of the  granite blade  workpiece, in order to avoid burns, annealing, grinding wheel hardness should use slightly softer wheel. Adjust the grinding, the selection of a little softer hardness of the wheel.
6, if the wheel does not meet your existing cutting and polishing, please contact us and forest hair, put your specific requirements, we will provide you with your needs satisfied products.

film diamond

 Diamond film synthesis technology and applied research on a global scale has grown rapidly, forming a "diamond film hot." In ten years, the development of gas-phase synthesis method to twenty kinds, general hourly rate of deposition is only 1 ~ 2um, how to accelerate the  deposition rate has been one study. Recent developments in the deposition rate to 100um / h or more, up to 930um / h. We call thick diamond. Diamond is a pure diamond thick, close to the hardness of natural diamond, and PCD, PCDN diamond powder is mixed with the binding agent is sintered, so by the binding agent of the concrete diamond blades  hardness, the hardness as the former. China has successfully mastered this technique, the maximum sediment thickness reaches 2.3mm. Has now been commercialized into the international advanced level.
PCD diamond thick film is that no different from the binding agent, is a pure diamond, the diamond core drills  higher its hardness, and natural diamond different, it has isotropic, low cost, so in many respects replaced PCD. Will be used for wire drawing dies uniform wear, so much better than the quality of the wire wire drawing natural diamond dies. If the deposition further improve the quality in ultra-precision machining is also the possibility of replacing natural diamond, the field of ultra-precision so popular attention.
In short, diamond and superhard materials as superior performance, application constantly expanding, from the developed to the  cup grinding wheels metal processing optical glass processing, stone processing, ceramics processing, processing of brittle materials is difficult for traditional processing areas, for a variety of industrial development will play a huge role in promoting broad prospects.

drill coring range

 At present all of our minimum core drill coring range are 12MM and above, with the largest on the magnetic drill
Drill diameter reached 160MM, if the concrete diamond blades  aperture is small, then I recommend using ordinary twist drill instead. Relatively speaking Why core drill so small it can not do? First, the tile blade  holes by drilling, twist drill has been able to deal with common good. In contrast, the twist is much lower than the cost of the hollow drill bit, drill steel so we did not do the smallest aperture so small. Then why do we do it rail bricks? In fact, in order to solve our twist open a large hole encountered much resistance and developed, so long as we understand this, we also know that, in fact, there is an important reason that the grinding cup wheel  smaller the aperture, But we take the three core drill blade tip the higher requirements, so the production cost would be a corresponding increase, compared to the twist drill, this is definitely select twist drill more.